Question

A closed curve encircles several conductors.The line integral $\int \overrightarrow{B}\cdot d\overrightarrow{l}$ around this curve is $3.83\times {10}^{-7}T-m$. If you were to integrate around the curve in the opposite direction, what could be the value of the line integral?

Answer 1

If we integrate around the curve in opposite direction, the value of line integral would also be reversed.

Thus $\int \overrightarrow{B}.d\overrightarrow{l}=-3.83\times {10}^{-7}T-m$